论文标题
用Icetop和IceCube检测到的空气淋浴中的Tev Muons多样性
Multiplicity of TeV muons in air showers detected with IceTop and IceCube
论文作者
论文摘要
南极的Icecube中微子天文台可以通过测量低能量（GEV）和高能量（TEV）MUON组件来提供广泛空气淋浴中的MUON生产模型的独特测试。我们在这里提出了与Icetop一起检测到的近垂直空气淋浴中TEV MUON含量与IceCube一致的测量。从表面观察到的空气淋浴的主要电磁成分估算了主要的宇宙射线能量。根据深层检测器中测得的能量损失，研究了淋浴的高能量muon含量。使用神经网络，根据事件的基础，估算了TEV MUON的主要能量和多重性。基线分析使用HADRONIC相互作用模型sibyll 2.1确定了平均多样性与2.5 PEV和250 PEV之间的主要能量的函数。使用基于LHC后模型QGSJET-II.04和EPOS-LHC的模拟获得的结果，以高达100 PEV的主要能量。对于所有三种HADRONIC交互模型，TEV MUON含量的测量与假设最新组成模型的预测一致。将结果与空气淋浴中GEVμ子的测量结果进行比较，表明基于LHC后模型获得的组成解释中存在张力。
The IceCube Neutrino Observatory at the South Pole can provide unique tests of muon production models in extensive air showers by measuring both the low-energy (GeV) and high-energy (TeV) muon components. We present here a measurement of the TeV muon content in near-vertical air showers detected with IceTop in coincidence with IceCube. The primary cosmic-ray energy is estimated from the dominant electromagnetic component of the air shower observed at the surface. The high-energy muon content of the shower is studied based on the energy losses measured in the deep detector. Using a neural network, the primary energy and the multiplicity of TeV muons are estimated on an event-by-event basis. The baseline analysis determines the average multiplicity as a function of the primary energy between 2.5 PeV and 250 PeV using the hadronic interaction model Sibyll 2.1. Results obtained using simulations based on the post-LHC models QGSJet-II.04 and EPOS-LHC are presented for primary energies up to 100 PeV. For all three hadronic interaction models, the measurements of the TeV muon content are consistent with the predictions assuming recent composition models. Comparing the results to measurements of GeV muons in air showers reveals a tension in the obtained composition interpretation based on the post-LHC models.
